Changes to crops: The tomatoes, cucumbers, beans, herbs, peppers, and melons keep growing. The microgreens have taken off and will be ready to harvest tomorrow. Of the seeds planted, the arugula, mustard, and various lettuce varieties have sprouted.

Daily water usage for crops: 15 gallons

Time(s) of watering for crops: 11:00AM, 06:30PM

Research observations: The microgreens have recovered from the early damage and are sprouting magnificently. Tomorrow they will be harvested.

Changes to research plants: None.

Aquaponics: Not in use.

Narrative: Today I watered the plants as usual and inventoried the tools, fertilizer, pots, and supplies.

The grow lights turned on at 02:00 pm. The analog timer has been gaining time steadily, as do the clocks on the electronic appliances in the Hab. These clocks probably use the frequency of the alternating current power supply to keep time as is common in most appliances. The standard frequency for an electrical grid in the US is 60 Hz, and our crew engineer observed that the generator is supplying power at 60.18 Hz. This increased frequency would cause the clocks to gain time at approximately the rate we are observing. See Sol 1 summary for a further explanation.

To compensate for this gain, the light timer needs to be reset every day.

Support/supplies needed: Scale with a capacity of 2 kg. The analog scale in the Science Dome has a capacity of 610g. Needed for experiments tomorrow.

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About The MDRS

The Mars Desert Research Station in the Utah desert was established by the Mars Society in 2001 to better educate researchers, students and the general public about how humans can survive on the Red Planet. It is the second Mars analogue habitat after the Flashline Mars Arctic Research Station was established in 2000.

Over 181 crews of six-person teams have lived in two week field visits at MDRS to simulate life on the Martian surface. Researchers and students alike have explored the Mars-like terrain in the area surrounding the station in full “spacesuits”, maintained the station’s systems, grown plants in the GreenHab to support themselves and even recycled their waste water.

Our activities at MDRS are not only about informing the public, but also conducting real research to bring humanity that much closer to the reality of human exploration on the planet Mars.

Annual field seasons at MDRS run approx. October through May. Anybody can apply to be on a crew, and we also need volunteers to help with the project.